X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=sshbn.c;h=a5e0552ff57523002adbafa6502cb0beda792a97;hb=cc66c86e7311c97db09da989c340ba3108c9e14f;hp=1c5c46a1eb8746862e6b5cf45e63cbaa3b9c5ced;hpb=a7cc906df0f728f7181aa750494cb986bf0b5176;p=PuTTY.git

diff --git a/sshbn.c b/sshbn.c
index 1c5c46a1..a5e0552f 100644
--- a/sshbn.c
+++ b/sshbn.c
@@ -607,6 +607,7 @@ static void internal_add_shifted(BignumInt *number,
     addend = (BignumDblInt)n << bshift;
 
     while (addend) {
+        assert(word <= number[0]);
 	addend += number[word];
 	number[word] = (BignumInt) addend & BIGNUM_INT_MASK;
 	addend >>= BIGNUM_INT_BITS;